1998 GMC Suburban Owner's Manual - Page 380

I Short Trip/City Maintenance Schedule -- Gasoline Engines 1 48,000 Miles (80 000 km) 0 Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 0 Lubricate chassis components (or every 3 months, whichever occurs first). (See footnote #.) 0 Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. (See footnote **.) 0 Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) I DATE ACTUAL MILEAGE I SERVICED B Y 50,000 Miles (83 000 km) 0 Change automatic transmission fluid and filter if the vehicle is mainly driven under one or more of these conditions: - In heavy city traffic where the outside temperature regularly reaches 90°F (32 O C) orhigher. - In hilly or mountainous terrain. - When doing frequent trailer towing. - Uses such as found in taxi, police or delivery service. y y o u do not use your vehicle under any o these conditions, clxrnge the f .fluid and jilter at 100,000 miles (166 000 km). I DATE MILEAGE I 7-16